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FAIR VALUE MEASUREMENTS (Tables) | 12 Months Ended
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Sep. 30, 2013
Fair Value Disclosures [Abstract] |
Fair Value Measurements, Measured on Recurring Basis | The following table categorizes the assets and liabilities in the Consolidated Balance Sheets that are accounted for at fair value on a recurring basis in periods subsequent to initial recognition.
(Thousands) | Quoted Prices in Active Markets (Level 1) |  | Significant Observable Inputs (Level 2) |  | Significant Unobservable Inputs (Level 3) |  | Effects of Netting and Cash Margin Receivables /Payables |  | Total
As of September 30, 2013 |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
U. S. Stock/Bond Mutual Funds | $ | 14,500 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 14,500 |
NYMEX/ICE natural gas contracts | 4,333 |  |  | 330 |  |  | — |  |  | (2,145 | ) |  | $ | 2,518 |
OTCBB natural gas contracts | — |  |  | 232 |  |  | — |  |  | (232 | ) |  | — |
NYMEX gasoline and heating oil contracts | 105 |  |  | — |  |  | — |  |  | (105 | ) |  | $ | — |
Natural gas commodity contracts | — |  |  | 1,129 |  |  | 150 |  |  | (495 | ) |  | $ | 784 |
Total | $ | 18,938 |  |  | $ | 1,691 |  |  | $ | 150 |  |  | $ | (2,977 | ) |  | $ | 17,802 |
Liabilities |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts | $ | 3,687 |  |  | $ | 321 |  |  | $ | — |  |  | $ | (4,008 | ) |  | $ | — |
OTCBB natural gas contracts | — |  |  | 5,443 |  |  | — |  |  | (232 | ) |  | $ | 5,211 |
NYMEX gasoline and heating oil contracts | — |  |  | — |  |  | — |  |  | — |  |  | $ | — |
Natural gas commodity contracts | — |  |  | 1,140 |  |  | 40 |  |  | (495 | ) |  | $ | 685 |
Total | $ | 3,687 |  |  | $ | 6,904 |  |  | $ | 40 |  |  | $ | (4,735 | ) |  | $ | 5,896 |
As of September 30, 2012 |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  |
U. S. Stock/Bond Mutual Funds | $ | 13,187 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 13,187 |
NYMEX/ICE natural gas contracts | 7,411 |  |  | 994 |  |  | — |  |  | (8,405 | ) |  | $ | — |
NYMEX gasoline and heating oil contracts | 344 |  |  | — |  |  | — |  |  | (344 | ) |  | $ | — |
Natural gas commodity contracts | — |  |  | 3,060 |  |  | 113 |  |  | (299 | ) |  | $ | 2,874 |
Total | $ | 20,942 |  |  | $ | 4,054 |  |  | $ | 113 |  |  | $ | (9,048 | ) |  | $ | 16,061 |
Liabilities |  |  |  |  |  |  |  |  |
NYMEX/ICE natural gas contracts | $ | 12,253 |  |  | $ | 1,891 |  |  | $ | — |  |  | $ | (14,144 | ) |  | $ | — |
NYMEX gasoline and heating oil contracts | — |  |  | — |  |  | — |  |  | — |  |  | $ | — |
Natural gas commodity contracts | — |  |  | 428 |  |  | 4 |  |  | (299 | ) |  | $ | 133 |
Total | $ | 12,253 |  |  | $ | 2,319 |  |  | $ | 4 |  |  | $ | (14,443 | ) |  | $ | 133 |
Reconciliation of the Level 3 beginning and ending net derivative balances | The following is a reconciliation of the Level 3 beginning and ending net derivative balances:
(Thousands) | 2013 |  | 2012
Beginning of period | $ | 109 |  |  | $ | 13 |
Settlements | (269 | ) |  | (54 | )
Net losses related to derivatives not held at end of period | (99 | ) |  | (68 | )
Net gains related to derivatives still held at end of period | 369 |  |  | 218 |
End of period | $ | 110 |  |  | $ | 109 |

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- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19279-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19190-110258 + Details
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